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Cannot enable VLAN on VM

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Hi all,

I cannot enable VLAN identification for VM, when I try to apply I get message: "Error Applying Network Adapter Changes. The Operation on computer 'ServerName' failed.". Previously everything was fine.

In event viewer I see following error:

Event ID 95, Source: Hyper-V-VmSwitch

The VLAN configuration being set on port 036E9BF5-0646-4DC4-967C-B8E4A9A2FB29 (Friendly Name: External_ExternalPort) on switch 749C7BFE-0926-4957-9B95-5D24CE4B1225 (Friendly Name: LAN) is invalid. Reason: VLAN settings other than Access VLAN Id must be zero

The same situation if I try to uncheck 'Enable VLAN identification' on VM where VLAN was already set. Reboot didn't help. NIC firmware upgrade didn't help.

Host info: Dell PowerEdge R710, Two Broadcom NET Extreme II NICs inside NIC team created by BACS, HyperV 2012 Server OS.

How to figure this out?


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